TW200638059A - System and technique for calibrating radar arrays - Google Patents

System and technique for calibrating radar arrays

Info

Publication number
TW200638059A
TW200638059A TW094145122A TW94145122A TW200638059A TW 200638059 A TW200638059 A TW 200638059A TW 094145122 A TW094145122 A TW 094145122A TW 94145122 A TW94145122 A TW 94145122A TW 200638059 A TW200638059 A TW 200638059A
Authority
TW
Taiwan
Prior art keywords
calibration factors
radars
technique
relative position
time delay
Prior art date
Application number
TW094145122A
Other languages
Chinese (zh)
Other versions
TWI377362B (en
Inventor
Jerome Howard Pozgay
Wesley Thomas Dull
Original Assignee
Raytheon Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Raytheon Co filed Critical Raytheon Co
Publication of TW200638059A publication Critical patent/TW200638059A/en
Application granted granted Critical
Publication of TWI377362B publication Critical patent/TWI377362B/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06Systems determining position data of a target
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/003Bistatic radar systems; Multistatic radar systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/87Combinations of radar systems, e.g. primary radar and secondary radar
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • G01S7/4004Means for monitoring or calibrating of parts of a radar system
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/66Radar-tracking systems; Analogous systems
    • G01S13/72Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
    • G01S13/723Radar-tracking systems; Analogous systems for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar by using numerical data

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A system and technique for calibrating a plurality of radars provides a set of simultaneous equations derived from monostatic echo returns from a plurality of targets. A solution of the simultaneous equations provides relative position calibration factors and time delay calibration factors associated with the plurality of radars. The relative position calibration factors and the time delay calibration factors allow the plurality of radars to be coherently combined with only a small amount of processing gain loss compared with an ideal coherent processing gain.
TW094145122A 2004-12-22 2005-12-19 System and technique for calibrating radar arrays TWI377362B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/022,028 US7183969B2 (en) 2004-12-22 2004-12-22 System and technique for calibrating radar arrays

Publications (2)

Publication Number Publication Date
TW200638059A true TW200638059A (en) 2006-11-01
TWI377362B TWI377362B (en) 2012-11-21

Family

ID=36190689

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094145122A TWI377362B (en) 2004-12-22 2005-12-19 System and technique for calibrating radar arrays

Country Status (6)

Country Link
US (1) US7183969B2 (en)
EP (1) EP1828803B1 (en)
JP (1) JP4988596B2 (en)
KR (1) KR101220952B1 (en)
TW (1) TWI377362B (en)
WO (1) WO2006068888A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108663664A (en) * 2017-03-28 2018-10-16 通用汽车环球科技运作有限责任公司 Tool for automatic more radar calibrations
WO2022188381A1 (en) * 2021-03-09 2022-09-15 深圳市万普拉斯科技有限公司 Dynamic calibration method and device for millimeter-wave radar and handheld terminal

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10298735B2 (en) 2001-04-24 2019-05-21 Northwater Intellectual Property Fund L.P. 2 Method and apparatus for dynamic configuration of a multiprocessor health data system
US7146260B2 (en) 2001-04-24 2006-12-05 Medius, Inc. Method and apparatus for dynamic configuration of multiprocessor system
US7138941B1 (en) * 2004-11-12 2006-11-21 The United States Of America As Represented By The Secretary Of The Navy In-situ calibration of radar frequency measurement
WO2006107565A1 (en) * 2005-04-04 2006-10-12 Raytheon Company System and method for coherently combining a plurality of radars
US7813563B2 (en) * 2005-12-09 2010-10-12 Florida State University Research Foundation Systems, methods, and computer program products for compression, digital watermarking, and other digital signal processing for audio and/or video applications
US7805012B2 (en) * 2005-12-09 2010-09-28 Florida State University Research Foundation Systems, methods, and computer program products for image processing, sensor processing, and other signal processing using general parametric families of distributions
US7548189B2 (en) * 2006-08-21 2009-06-16 Northrop Grumman Corporation Using radar targets of opportunity to build a monopulse calibration table
JP5197138B2 (en) * 2008-04-30 2013-05-15 三菱電機株式会社 Multi static radar device
FR2933497B1 (en) * 2008-07-03 2012-06-01 Claude Goutelard METHODS AND SYSTEMS FOR CODED EMISSION AND ANTENNA RECEPTION, IN PARTICULAR FOR RADAR
IN2012DN00691A (en) * 2008-07-08 2015-06-19 Thales Sa
US8427370B2 (en) * 2008-07-31 2013-04-23 Raytheon Company Methods and apparatus for multiple beam aperture
US8009081B2 (en) * 2008-10-21 2011-08-30 Lang Hong 3D video-Doppler-radar (VIDAR) imaging system
US9358924B1 (en) * 2009-05-08 2016-06-07 Eagle Harbor Holdings, Llc System and method for modeling advanced automotive safety systems
ES2386101T3 (en) * 2009-05-27 2012-08-09 Thales Nederland B.V. A system to prevent two rotating antennas from lighting each other
CN101839976B (en) * 2010-04-07 2012-08-15 中国人民解放军理工大学 Radar system error estimating method by utilizing beidou I terminal
JP5712373B2 (en) * 2010-10-19 2015-05-07 株式会社国際電気通信基礎技術研究所 Distance sensor calibration apparatus, calibration program, and calibration method
CA2998949A1 (en) * 2011-09-09 2013-03-14 Accipiter Radar Technologies, Inc. Portable computing system and portable computer for use with same
US9631914B2 (en) * 2014-03-13 2017-04-25 The Boeing Company Calibration of sensor arrays
DE102014207523A1 (en) * 2014-04-22 2015-10-22 Robert Bosch Gmbh METHOD FOR CALIBRATING A RADAR SENSOR AND RADAR SYSTEM
KR101527514B1 (en) * 2014-05-23 2015-06-09 국방과학연구소 Apparatus and method of multi-channel tracking-information conversion for integrated processing of flight data
US10175348B2 (en) * 2014-10-08 2019-01-08 Src, Inc. Use of range-rate measurements in a fusion tracking system via projections
US9979084B2 (en) * 2014-12-02 2018-05-22 Raytheon Company Satellite-based phased array calibration
US9964637B1 (en) * 2015-04-17 2018-05-08 Lockheed Martin Corporation System and method for operating passive radar
US10061015B2 (en) 2015-09-30 2018-08-28 Texas Instruments Incorporated Multi-chip transceiver testing in a radar system
DE102017110063A1 (en) * 2017-03-02 2018-09-06 Friedrich-Alexander-Universität Erlangen-Nürnberg Method and device for environment detection
CN107167789A (en) * 2017-05-12 2017-09-15 北京怡孚和融科技有限公司 The calibration system and method for a kind of laser radar
US10613212B2 (en) 2017-08-14 2020-04-07 Oculii Corp. Systems and methods for doppler-enhanced radar tracking
CN107340506B (en) * 2017-08-15 2020-02-07 西安电子工程研究所 Method for calibrating receiving and transmitting channels of broadband phased array radar
CN108226888B (en) * 2017-12-14 2021-05-04 中国科学院国家天文台 Space multi-target detection system and method
US20210231560A1 (en) 2018-04-29 2021-07-29 Regenxbio Inc. Systems and methods of spectrophotometry for the determination of genome content, capsid content and full/empty ratios of adeno-associated virus particles
WO2019212921A1 (en) 2018-04-29 2019-11-07 Regenxbio Inc. Scalable clarification process for recombinant aav production
EP3807405A2 (en) 2018-06-14 2021-04-21 REGENXBIO Inc. Anion exchange chromatography for recombinant aav production
JP2021533757A (en) 2018-08-10 2021-12-09 リジェネクスバイオ インコーポレイテッド A scalable method for recombinant AAV generation
AU2019362833A1 (en) 2018-10-15 2021-04-29 Regenxbio Inc. Method for measuring the infectivity of replication defective viral vectors and viruses
TW202102526A (en) 2019-04-04 2021-01-16 美商銳進科斯生物股份有限公司 Recombinant adeno-associated viruses and uses thereof
WO2020210600A1 (en) 2019-04-11 2020-10-15 Regenxbio Inc. Methods of size exclusion chromatography for the characterization of recombinant adeno-associated virus compositions
MX2021012564A (en) 2019-04-19 2022-01-18 Regenxbio Inc Adeno-associated virus vector formulations and methods.
CN114144197A (en) 2019-04-24 2022-03-04 再生生物股份有限公司 Fully human post-translationally modified antibody therapeutics
WO2021005223A1 (en) 2019-07-10 2021-01-14 INSERM (Institut National de la Santé et de la Recherche Médicale) Methods for the treatment of epilepsy
US20230042103A1 (en) 2019-07-26 2023-02-09 Regenxbio Inc. Engineered nucleic acid regulatory element and methods of uses thereof
WO2021099394A1 (en) 2019-11-19 2021-05-27 INSERM (Institut National de la Santé et de la Recherche Médicale) Antisense oligonucleotides and their use for the treatment of cancer
TW202134260A (en) 2019-11-28 2021-09-16 美商銳進科斯生物股份有限公司 Microdystrophin gene therapy constructs and uses thereof
US11294050B2 (en) 2020-01-15 2022-04-05 Rockwell Collins, Inc. Automatic ground initialization of radar alignment servo
WO2022011262A1 (en) 2020-07-10 2022-01-13 Inserm (Institut National De La Sante Et De La Recherche Medicale) Methods and compositions for treating epilepsy
WO2022060916A1 (en) 2020-09-15 2022-03-24 Regenxbio Inc. Vectorized antibodies for anti-viral therapy
WO2022060915A1 (en) 2020-09-15 2022-03-24 Regenxbio Inc. Vectorized lanadelumab and administration thereof
WO2022076750A2 (en) 2020-10-07 2022-04-14 Regenxbio Inc. Recombinant adeno-associated viruses for cns or muscle delivery
US20230381341A1 (en) 2020-10-07 2023-11-30 Regenxbio Inc. Adeno-associated viruses for ocular delivery of gene therapy
WO2022094157A1 (en) 2020-10-28 2022-05-05 Regenxbio Inc. Vectorized anti-cgrp and anti-cgrpr antibodies and administration thereof
AU2021371307A1 (en) 2020-10-28 2023-06-01 Regenxbio, Inc. VECTORIZED ANTI-TNF-α ANTIBODIES FOR OCULAR INDICATIONS
IL302282A (en) 2020-10-29 2023-06-01 Regenxbio Inc Vectorized tnf-alpha antagonists for ocular indications
WO2022094255A2 (en) 2020-10-29 2022-05-05 Regenxbio Inc. Vectorized factor xii antibodies and administration thereof
JP2023554389A (en) 2020-12-16 2023-12-27 リジェネクスバイオ インコーポレイテッド Method for producing recombinant adeno-associated virus virus particles
WO2022147087A1 (en) 2020-12-29 2022-07-07 Regenxbio Inc. Tau-specific antibody gene therapy compositions, methods and uses thereof
MX2023008595A (en) 2021-01-21 2023-09-14 Regenxbio Inc Improved production of recombinant polypeptides and viruses.
IL307902A (en) 2021-04-26 2023-12-01 Regenxbio Inc Microdystrophin gene therapy administration for treatment of dystrophinopathies
WO2022235614A2 (en) 2021-05-04 2022-11-10 Regenxbio Inc. Novel aav vectors and methods and uses thereof
WO2022241030A1 (en) 2021-05-11 2022-11-17 Regenxbio Inc. Treatment of duchenne muscular dystrophy and combinations thereof
CA3226452A1 (en) 2021-07-19 2023-01-26 New York University Auf1 combination therapies for treatment of muscle degenerative disease
WO2023060113A1 (en) 2021-10-05 2023-04-13 Regenxbio Inc. Compositions and methods for recombinant aav production
WO2023060272A2 (en) 2021-10-07 2023-04-13 Regenxbio Inc. Recombinant adeno-associated viruses for cns tropic delivery
WO2023060269A1 (en) 2021-10-07 2023-04-13 Regenxbio Inc. Recombinant adeno-associated viruses for targeted delivery
WO2023077092A1 (en) 2021-10-28 2023-05-04 Regenxbio Inc. Engineered nucleic acid regulatory elements and methods and uses thereof
WO2023178053A1 (en) 2022-03-13 2023-09-21 Regenxbio Inc. Modified muscle-specific promoters
WO2023178220A1 (en) 2022-03-16 2023-09-21 Regenxbio Inc. Compositions and methods for recombinant aav production
WO2023183623A1 (en) 2022-03-25 2023-09-28 Regenxbio Inc. Dominant-negative tumor necrosis factor alpha adeno-associated virus gene therapy
WO2023201277A1 (en) 2022-04-14 2023-10-19 Regenxbio Inc. Recombinant adeno-associated viruses for cns tropic delivery
TW202400803A (en) 2022-05-03 2024-01-01 美商銳進科斯生物股份有限公司 Vectorized anti-complement antibodies and complement agents and administration thereof
WO2023215807A1 (en) 2022-05-03 2023-11-09 Regenxbio Inc. VECTORIZED ANTI-TNF-α INHIBITORS FOR OCULAR INDICATIONS
WO2023239627A2 (en) 2022-06-08 2023-12-14 Regenxbio Inc. Methods for recombinant aav production
WO2024017990A1 (en) 2022-07-21 2024-01-25 Institut National de la Santé et de la Recherche Médicale Methods and compositions for treating chronic pain disorders
WO2024044725A2 (en) 2022-08-24 2024-02-29 Regenxbio Inc. Recombinant adeno-associated viruses and uses thereof
WO2024081746A2 (en) 2022-10-11 2024-04-18 Regenxbio Inc. Engineered nucleic acid regulatory elements and methods and uses thereof

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3128466A (en) 1953-09-04 1964-04-07 Goodyear Aerospace Corp Radome boresight error compensator
US3940767A (en) 1955-01-21 1976-02-24 Hughes Aircraft Company Electronic radome-error compensation system
US3316549A (en) 1966-03-16 1967-04-25 Richard H Hallendorff Radome phase compensating system
US3858214A (en) 1966-05-18 1974-12-31 Us Army Antenna system
US4011564A (en) 1966-07-07 1977-03-08 The United States Of America As Represented By The Secretary Of The Navy Phase modulated monopulse system
US3569965A (en) 1969-07-18 1971-03-09 Us Navy Multichannel frequency-select system
US3938148A (en) 1974-07-10 1976-02-10 The United States Of America As Represented By The Secretary Of The Navy Automatic frequency control system
GB1594602A (en) 1975-06-04 1981-08-05 Marconi Co Ltd Radio systems and apparatus
FR2394815A1 (en) 1977-06-17 1979-01-12 Thomson Csf PROTECTION DEVICE AGAINST A RADAR-DEPENDED JAMMER, IN PARTICULAR AN AIRPORT TRACKING RADAR, AND RADAR INCLUDING SUCH A DEVICE
DE2738507C3 (en) 1977-08-26 1980-08-07 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Process to increase the probability of impact by disturbed missiles and device for carrying out the process
US4256275A (en) 1978-11-01 1981-03-17 E-Systems, Inc. Homing system and technique for guiding a missile towards a metal target
US4212012A (en) 1978-12-18 1980-07-08 Raytheon Company Continuous wave radar
US4290066A (en) 1979-10-12 1981-09-15 Motorola Inc. High speed adaptive clutter filter
GB8020538D0 (en) 1980-06-25 1995-11-01 Elliott Brothers London Ltd Ground slope detector
US5163176A (en) 1980-12-29 1992-11-10 Raytheon Company All weather tactical strike system (AWTSS) and method of operation
US4688042A (en) 1981-10-08 1987-08-18 Sperry Corporation Short pulse receiver with anti-jam capability
US4586044A (en) 1983-01-24 1986-04-29 Westinghouse Electric Corp. Clutter positioning for electronically agile multi-beam radars
FR2586109B1 (en) 1985-08-09 1987-10-30 Inf Systemes Reseaux METHOD OF SPATIAL CALIBRATION OF A COUPLE OF FIXED RADARS RELATIVE TO THE OTHER
US5345239A (en) 1985-11-12 1994-09-06 Systron Donner Corporation High speed serrodyne digital frequency translator
US4766435A (en) 1986-05-27 1988-08-23 Hughes Aircraft Company Adaptive radar for reducing background clutter
US6295017B1 (en) 1988-06-27 2001-09-25 Raytheon Company Jammer detection and tracking system
GB2223908A (en) 1988-10-14 1990-04-18 Philips Electronic Associated Continuously transmitting and receiving radar
JPH07151532A (en) * 1993-11-29 1995-06-16 Mitsubishi Electric Corp Bias error estimating device for sensor
US5400035A (en) 1993-12-23 1995-03-21 Hughes Aircraft Company False track discrimination in the sidelobe region of a monopulse antenna
US5673051A (en) 1995-12-21 1997-09-30 Hughes Electronics Discrete phase modulator
EP0860708B1 (en) * 1997-02-21 2005-07-27 Hughes Electronics Corporation Method and system for determining a position of a transceiver unit utilizing two-way ranging in a polystatic satellite configuration including a ground radar
JP3439068B2 (en) * 1997-05-20 2003-08-25 三菱電機株式会社 Apparatus for estimating bias error of sensor attitude and position
US6359588B1 (en) * 1997-07-11 2002-03-19 Nortel Networks Limited Patch antenna
SE510844C2 (en) * 1997-11-03 1999-06-28 Celsiustech Syst Ab Automatic compensation of systematic errors in target tracking with multiple sensors
US6225842B1 (en) * 1998-01-09 2001-05-01 Rohm Co., Ltd. Control device with forced operation function and semiconductor integrated circuit device
US6087995A (en) * 1999-02-17 2000-07-11 Anritsu Company Universal autoradar antenna alignment system
IL144431A0 (en) 1999-02-17 2002-05-23 Raytheon Co Mprf interpulse phase modulation for maximizing doppler clear space
AU5721500A (en) 1999-02-17 2000-09-21 Raytheon Company Off-axis indicator algorithm for electrically large antennas
US6225942B1 (en) * 1999-07-30 2001-05-01 Litton Systems, Inc. Registration method for multiple sensor radar
EP1380853A3 (en) * 2001-03-29 2008-04-23 SES Astra S.A. Ranging system for determining ranging information of a spacecraft
JP3749489B2 (en) * 2002-01-25 2006-03-01 三菱電機株式会社 Radar equipment
EP1530730A1 (en) * 2002-08-16 2005-05-18 Stichting Astron Calibration method, device and computer program
US6954173B2 (en) * 2003-07-02 2005-10-11 Raytheon Company Techniques for measurement of deformation of electronically scanned antenna array structures
US6977610B2 (en) * 2003-10-10 2005-12-20 Raytheon Company Multiple radar combining for increased range, radar sensitivity and angle accuracy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108663664A (en) * 2017-03-28 2018-10-16 通用汽车环球科技运作有限责任公司 Tool for automatic more radar calibrations
CN108663664B (en) * 2017-03-28 2022-05-03 通用汽车环球科技运作有限责任公司 Tool for automatic multi-radar calibration
WO2022188381A1 (en) * 2021-03-09 2022-09-15 深圳市万普拉斯科技有限公司 Dynamic calibration method and device for millimeter-wave radar and handheld terminal

Also Published As

Publication number Publication date
JP4988596B2 (en) 2012-08-01
US20060132357A1 (en) 2006-06-22
TWI377362B (en) 2012-11-21
US7183969B2 (en) 2007-02-27
EP1828803B1 (en) 2015-02-25
WO2006068888A1 (en) 2006-06-29
JP2008525799A (en) 2008-07-17
EP1828803A1 (en) 2007-09-05
KR101220952B1 (en) 2013-02-07
KR20070089803A (en) 2007-09-03

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